Gulf Coast Entertainment LLC, the ownership group that includes Dale Earnhardt Jr., former Mobile Mayor Mike Dow and others said in December that it expects to open the complex in 2011.

The owners are currently seeking $640 million in financing to build the complex, which would include an 75,000-seat oval track, a road course and karting track on roughly 2,000 acres. Now the group will seek another $10 million to close the Memphis deal, said spokeswoman Laura Paquelet.

Dover Motorsports Inc., which now owns the Memphis track, will get a 2 percent stake in Gulf Coast Entertainment. Dover Motorsports will also be paid to manage racing activities at both tracks. Tim Horne, chief financial officer of Dover Motorsports, said the management contract hasn't been negotiated yet.

Neither Paquelet or Horne would say if Gulf Coast Entertainment intended to try to get NASCAR approval to move racing dates from Memphis to Prichard.